// Without setting SO_REUSEADDR on macOS and Linux, binding to a recently used endpoint can fail.
// https://github.com/dotnet/corefx/issues/24562
private unsafe void EnableRebinding(Socket listenSocket)
{
var optionValue = 1;
var setsockoptStatus = 0;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
setsockoptStatus = setsockopt(listenSocket.Handle.ToInt32(), SOL_SOCKET_LINUX, SO_REUSEADDR_LINUX,
(IntPtr)(&optionValue), sizeof(int));
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
setsockoptStatus = setsockopt(listenSocket.Handle.ToInt32(), SOL_SOCKET_OSX, SO_REUSEADDR_OSX,
(IntPtr)(&optionValue), sizeof(int));
}
if (setsockoptStatus != 0)
{
_trace.LogInformation("Setting SO_REUSEADDR failed with errno '{errno}'.", Marshal.GetLastWin32Error());
}
}